1900.] EROM SINGAPORE AND MALACCA. 745 



XSXYII. Genus Neptunus de Haan. 

 59.. Neptunus pelagicus Linn. 



Cancer pelagicus, Linn. Syst. Nat. (ed. xii.) p. 1042 (1766). 



Lupea pelagica, M.-Edw. Hist. Nat. Crust, t. i. p. 450 (1834). 



Portunus {Neptunus) pelagicus, de Haan, Crust. Japon. p. 37, 

 pi. ix. & x. (1839). 



Neptunus pelagicus, A. M.-Edw. Arch. Mus. t. x. p. 320 (1861); 

 Hasw. Cat. Austr. Crust, p. 77 (1882); Walker, Journ. Linn. Soc, 

 Zool. vol. xx. p. 110 (1887) ; de Man, Mergui Crust, p. 69 (1888) ; 

 id. Zoolog. Jahrb. Bd. viii. p. 556 (1895); Henderson, Trans. Linn. 

 Soc, Zool. vol. v. p. 367 (1893). 



Hob. Singapore. Six males and six females ; all from pools at 

 low water. 



Dim. tf 84x45-25. 6 81x44. s 68x37. 6 51-5x28. 

 6 51-5x27-5. 6 42-25x22. $ 58x31. $ 55-5x30-5. 

 $ 44x24-5. $ 39x22. $ 37x21. $ 33x19. 



60. Neptunus sanguinolentus Herbst. 



Cancer sanguinolentus, Herbst, Naturgesch. d. Krab. i. p. 161, 

 pi. viii. ff. 56-57 (1796). 



Portunus sanguinolentus, Eabr. Suppl. Ent. Syst. p. 367 (1798). 



Lupea sanguinolenta, M.-Edw. Hist. Nat. Crust, t. i. p. 451 

 (1834). 



Neptunus sanguinolentus, A. M.-Edw. Arch. Mus. t. x. p. 319 

 (1861); Hasw. Cat. Austr. Crust, p. 77 (1882); Henderson, 

 Trans. Linn. Soc, Zool. vol. v. p. 368 (1893). 



Hah. Singapore ; sandy shore. Two males and a female. 



Dim. c? 52x28. S 40-5x22. $ 37-5x20. 



61. Neptunus (Amphttrite) hastatoldes Eabr. (Plate XLV. 

 fig- 7.) 



Portunus hastatoides, Eabr. Suppl. Ent. Syst. p. 368 (1798). 



Cancer hastatus, Herbst, Naturgesch. d. Krabben, iii. p. 3, 

 pi. lv. f. i. (1803). 



Lupea hastata, M.-Edw. Hist. Nat. Crust, t. i. p. 455 (1834). 



Portunus (Amphitrite) hastatoides, de Haan, Crust. Japon. p. 39, 

 pi. i. f. 3 (1839). 



Neptunus hastatoides, Henderson, Trans. Linn. Soc, Zool. vol. v. 

 p. 368 (1893). 



Neptunus (Amphitrite) hastatoides, de Man, Zoolog. Jahrb. 

 Bd. viii. p. 557(1895). 



Hah. Singapore; 5 fins., mud. Five small males and one female. 



In two of these the dark spot, on the end of the dactyls of the 

 last pair, is absent. Like Dr. de Man's Malacca examples (t. c.) 

 the middle teeth of the front project only as far as the middle 

 portion of the upper orbital margin. The teeth mentioned by 

 Dr. de Man as occurring on the distal eud of the hind border of 

 the nieri of the last pair of legs are not readily distinguished in 

 these small examples, but they seem to be variable and not constant. 



